bpo-41625: Specify that Linux >= 2.6.17 *and* glibc >= 2.5 are requir… (GH-23351)



…ed for splice()
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 648c52b..a4c5fbb 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -1441,7 +1441,7 @@
    make sense to block because there are no writers connected to the write end
    of the pipe.
 
-   .. availability:: Linux kernel >= 2.6.17 or glibc >= 2.5
+   .. availability:: Linux kernel >= 2.6.17 and glibc >= 2.5
 
    .. versionadded:: 3.10